The Voyager 1 and Voyager 2 space probes, both launched in 1977, each had a primary objective to explore Jupiter and Saturn. This goal was achieved by 1981. Yet Voyager, NASA’s longest running mission, has continued to this day. Both Voyager probes are still operating, and returning scientific data from outside our solar system.
https://www.youtube.com/watch?v=H62hZJVqs2o
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